Instead of a text, you can respond with a video.
You can either add the URL of the video, or upload it by yourself.
The video response contains three fields:
url: The URL of the video. Note that when you upload a video, the
urlautomatically fills with the video's URL.
name: The name you give the video and is only shown when the video cannot load.
size: The size of the video. Note that the size must be greater than 10 bytes.